I am going to assume Hornady's claims for their factory ammo are correct.
.475 Linebaugh with 400-grain XTP, in a 7.5" barrel: 1300 fps
But I am arbitrarily assuming that the claimed velocity is correct at 70 degrees F, and that this ammo has a TBI of 2 fps/degree F.
So, at 52 degrees F, the velocity of that ammo is (1300 fps) - (18x2) fps = 1264 fps.

In my Ruger No.1 with 20" barrel at 52 degrees F, yesterday:

The first 6-shot string, including a fouling shot in clean barrel:
Average = 1434 fps MV
St.dev. = 16 fps
Extreme Spread = 39 fps

The next 11-shot string:
Average = 1430 fps MV
St.dev. = 15 fps
Extreme Spread = 53 fps

Velocities of 17 shots:
High = 1449 fps
Low = 1396 fps.
Nothing to write home about!
1. 1400 fps (fouling shot, used to get on paper)
2. 1421 fps
3. 1439 fps
4. 1436 fps
5. 1402 fps (shots 3,4,5 are group A)
6. 1418 fps
7. 1421 fps
8. 1410 fps (shots 6,7,8 are group B)
9. 1427 fps
10. 1415 fps
11. 1396 fps (shots 9,10,11 are group C)
12. 1397 fps
13. 1424 fps
14. 1413 fps (shots 12,13,14 are group D)
15. 1404 fps
16. 1407 fps
17. 1449 fps (shots 15,16,17 are group E)
Enough chronographing at 50 yards.
The scope was as close to zeroed at 50 yards as I could get it with the factory ammo.
Then I shot it at 100 yards for two 3-shot groups (F and G),
and a single 3-shot group at 200 yards (group H).
Then I was able to connect with the gong at 200 yards.

Here is the "rifle," but where is the rest of the barrel?
17 shots fired, ready for 100 and 200 yards:



To the point of guesstimation:
At 52 degrees F
7.5"-barreled handgun: 1264 fps (+/- cylinder gap losses, or single-shot with no cylinder gap?)
20"-barreled "rifle": 1430 fps

I gain 166 fps with 12.5" longer barrel and no cylinder gap.
Sounds about right.

Rip ...

50-yard target:

Here is the most interesting aspect of the 50-yard shooting:



Two bullets (shots #15 and #16) chronographed very close to same velocity (1404 and 1407 fps) and landed close to zero in one wide hole.
The fastest bullet of the chronographing was shot #17 at 1449 fps (5-yard Chrono) and it went low.
This proves that the ProChrono was not BS-ing me.
Shorter barrel time, exits muzzle before barrel rises as much, so bullet hits low.
Like a handgun or double rifle.



Rip ...

100 yards:






Rip ...

Stapling targets at 200 yards and looking back at firing line, just a little windy, otherwise beautiful weather:



At 200 yards, lucky enough to get 3 shots of factory ammo close to same velocity?
Whatever happened, it was the best group on paper:





200-yard gong, some of the craters on this moon were made by Mighty Mite:




And now I can do the Nikon "Spot-On" thing for the BDC reticle on the SlugHunter scope,
and quit using Tennessee Elevation.
However, I am stuck with Kentucky Windage.
Next up is +500-grain, cast-lead, powder-coated, gas-checked, Longcol-loaded wunderboolit,
with smaller standard deviation on the MV than the factory stuff
I hope.

Rip ...

Rip ...

quote:

Originally posted by jwp475:

quote:

Originally posted by RIP:
jwp475:

Have you chronographed the Hornady factory ammo .475 Linebaugh/400-grain XTP in your handgun?
If so, what velocity did you get with what length of barrel?
Please do tell.

Hornady claims 1300 fps with 400-gr XTP on factory ammo box, and I assume this is with a 7.5" barrel.
Their reloading manual (10th Ed.) shows only a 325-grain XTP load for the .475 Linebaugh with a 7.5" barrel.
325-grainer maxes out
at 1550fps with 31.6 grains of LIL'GUN,
and 1500 fps with 31.8 grains of H110.

Rip

I have not shot or chronographed the Hornady factory load 475 Ammo.

The Buffalo Bore factory load with 420 grain hardcast chronographed at 1400 fps on a warm summer day out of my 6” barreled revolver.

jwp475,
Thanks for that.
It tells me that the Hornady factory ammo is fairly low pressure,
if it only does 1300 fps with 400-grain XTP at 70 degrees F from a 7.5" barreled revolver, I assume.
When fired in the Ruger No.1 the necks of the cases are smoked and the primers are rounded.
I need to load it to higher pressure until the necks seal and primers flatten,
at least.
I have found that he Western Powders Mannual Edition 6.0 has data for the .475 Linebaugh (1.4" case)
and even for the .475 Linebaugh Maximum (1.6" case).
This includes pressures in PSI for the top-end loads for both cartridges.
Barrel is 8" long in the former, and 7.9" long in the latter.
Case: Starline
Primer: WLP former, CCI-350 latter
Bullet weights range from 275-gr Barnes XPB to 425-grain LFNGC.
Powders:
Accurate No. 9
Accurate 4100
Ramshot Enforcer
Accurate 5744.

A couple of reduced loads with Accurate 5744 are given for the 1.4" case.
Three full steam loads with Accurate 5744 are listed for the 1.6" case.

I have yet to find any +500-grain-cast-bullet load data for the .475 Linebaugh 1.4" or .475 Linebaugh 1.6" Maximum.
I will make some for the .475 Linebaugh 1.4-Inch "Longclaw."

Rip ...

The 475L is a 50,000 psi load max for a revolver. The Ruger can handle 60 to 65 thousand psi loads in my opinion. If no data exists with 296/H-110 make sure the powder fills the case to the base of the bullet seated in the case. LongCOL will need more power to pressure up consistently.

Yup. More powder AND higher pressure.
Hot on the heels of the 470 NE
with a dwarf rifle.
If the .458 Win.Mag Longclaw is the Bastard King of the North,
then the .475 Linebaugh Longclaw is the Dwarf Hand of the King.
Game of Rifles.

Rip ...

Rip, my Rossi 92 in 480 Ruger loves Lil'gun, not sure how it's big brother does with it.

quote:

Originally posted by RIP:
Yup. More powder AND higher pressure.
Hot on the heels of the 470 NE
with a dwarf rifle.
If the .458 Win.Mag Longclaw is the Bastard King of the North,
then the .475 Linebaugh Longclaw is the Dwarf Hand of the King.
Game of Rifles.

Rip ...

With the same load that I got 1400fps out of a 6” revolver at the same loaded length should pick up at least 200 fps in the rifle barrel. Increase the pressure add another 100 fps. Increase the COAL and add more powder, the speed will increase again.

quote:

Originally posted by theback40:
Rip, my Rossi 92 in 480 Ruger loves Lil'gun, not sure how it's big brother does with it.

theback40,
Noted, thanks.
Hodgdon's 2017 Annual Manual has 480 Ruger data for Lil'Gun which is a Lil'faster and a Lil'higher pressure than the H110 load with 325-grain XTP.
It is a Lil'more so with the 355-grain BTB LFN GC.
Might be just what I need to get up the needed steam in the .475 Linebaugh Longclaw.

Rip ...

quote:

Originally posted by jwp475:
With the same load that I got 1400fps out of a 6” revolver at the same loaded length should pick up at least 200 fps in the rifle barrel. Increase the pressure add another 100 fps. Increase the COAL and add more powder, the speed will increase again.

jwp475,
Yours was a 425-grain cast bullet, Buffalo Bore, eh?
Mine, maybe +2000 fps with the 400-grain XTP, if Jeff Quinn can do 2100 fps,
though his was a Belt Mountain "Punch" 400-grainer with less bearing surface?
Then there is this .476/516-grain FNGC, cosmetics of PC-paint/lube yet to be decided:
Red Death or Black Death?












Rip ...

The bullets are segregated by weight and then colored differently.
Those thirty-four 506-grainers are going to be powder-coated plain-ol', shiney-bright Harbor Freight Red.
Like lipstick on a pig, of course.
The gas check and paint together add 11 grains.
Therefore, "517-grainers" are for accuracy trials.

The previously painted bullets were segregated by weight then painted, gas-checked, and sized.
By averages of their lots:
The 20 Red Death Bullets are "513-grainers."
The 30 Black Death Bullets are "516-grainers."
I will use those for load development, before I test the "Pig Lipstick" 517-grainers.

I have 32 naked bullets that weigh from 507.0 to 508.9 grains.
Maybe I will try powder-coating them repeatedly with Harbor Freight Matte Black until they are covered.
"Total Eclipse" bullets will be nominally "519-grainers."

Rip ...

That long loaded one looks like a supersize 22lr
Sorry for the Jackalope comment

boom stick,
That was not a jackaloper.
That pertained to the .475 Linebaugh Longclaw, sort of.
Thanks.

http://www.wideopenspaces.com/...-full-swing-wyoming/




Rip ...

Thanks for posting.

A Ruger no.1 with a 20 inch should be a very nice package to carry.

I know mine with a 22inch barrel is.

Those cases that took the blue pill will perform well in the single shot platform. It is a bit of magic to gain velocity, mass and powder room.

quote:

Originally posted by p dog shooter:
Thanks for posting.

A Ruger no.1 with a 20 inch should be a very nice package to carry.

I know mine with a 22inch barrel is.

Welcome, p dog shooter,

When the .475 Linebaugh/480 Ruger, Ruger No.1-S first came out in 2009 it was announced with a 22" barrel.
Yet Jeff Quinn of www.gunblast.com wrote up a factory 20"-barreled version in 2009 ...

My experiment in High-Tech powder-coating is not pretty, but will have to see how it shoots.
I mixed two powders,the Harbor Freight Red with the Harbor Freight Matte Black, then shaked and baked.
The new version of "Black Death" was the result,
and the old version Of "Pig Lipstick" gets to call itself "Red Death" now.
Or maybe that should be "Purple Death and Red Death":





Rip ...

I want to powder coat some bullets for my 460 S@W and my 45-70.

But the trouble is I did a marathon casting, sizing and lubing session, and I have hundreds of bullets sized and lubed to shoot up first.

They work well the way they are.

I have the powder coating waiting to be used.

But the last time I thought I should fire up the pot and make more I decided going fishing was a better idea.

It is one of many projects that are simmering on the back burner.

I am thinking H4198 is the ticket for .476"/517-grainers, maybe reaching 1700 fps, in the 20" Ruger No.1, just over 3300 ft-lbs KE.
The 400-grain XTP with Lil'Gun might do over 2000 fps, or just over 3500 ft-lbs KE.
The .475 Linebaugh Mighty Mite should be adequate for bear or buffalo at close range.
I'll be loaded for bear when the weather breaks.

Rip ...

Loading a brass solid out long is a great way to make up for longer solids but I would want a faster twist. A 400 grain brass solid may be a good penetrator and stable terminally in that platform for heavy boned beasts.

Loading the 400-grain XTP with Lil'Gun, hoping to see +2000 fps.
Loading the 516-grain GC-PC with H4198, hoping to see +1600 fps.
Using WLP primers, said to be the John Linebaugh way.
Might have to use the WLR primer if I get any hangfires with H4198.
Strangely, the Hornady manual shows use of the WLP primer with the 480 Ruger, but they show the WLR primer for the .475 Linebaugh.

Whenever winter lets up ...


Rip ...

I have loaded 21 shots each of the two bullets above.
0.5 grain increments of 3 shots x 7 for each.
Lil'Gun with the 400-grain XTP: 33.5 grains to 36.5 grains.
H4198 with the 516-grain FNGCPC from an Accurate Mold: 30.5 grains to 33.5 grains.
WLP primers for all loads.
Hornady .475 Linebaugh brass.

45 degrees F today and snow is melting.
Temps to 55 degrees F predicted tomorrow.
Chronograph weather.
I'll take a Ruger Superblackhawk 7.5" revolver in 480 Ruger also,
and fire the 480-Ruger factory loads in it and the 20"-barreled Ruger No.1 for comparison.

Rip ...

I was just looking at a No.1 in this chambering so your report is very timely.
Just don’t know if I need another project.
Also, what is the consensus on this cartridge?
Worthwhile?
Does it fill a gap that doesn’t need filling?

Huvius,
Thanks for the reply.
I don't need one either, but I could not resist the possiblities.
It is a good rifle for cast-bullet shooting, something to goad you into casting some +500-grain bullets that can be used in other rifles.
I have these to try eventually:
470 NE Merkel DR 140A (21" twist)
470 Mbogo bolt-action BBK-02 (16" twist)
470 Capstick bolt-action (10" twist)
Compare to:
.475 Linebaugh Ruger No.1 (18" twist)

Hey, the .475 Linebaugh, if it gets too boring, could be re-chambered to 470 Capstick.

However, with the .475 Linebaugh you can shoot 480 Ruger also ...

I braved ankle-deep mud and melting slop at the range yesterday:



That Hornady 480 Ruger handgun load is more accurate for me in the Ruger No.1:



The same ammo in a handgun patterns OK for me at 25 yards, but I need to fine tune a load for better shooting accuracy.
Or maybe fine tune me.





Rip ...

On to the beef of the meat and 'taters:




Last time out, this factory ammo chronographed 1430 fps, also at 52 degrees F, remarkable coincidence.
This time out it was 8 fps faster at the muzzle,
and it also shot a little more accurately.

With LongCOL handload the same bullet can be pushed over 500 fps faster, with accuracy as good,
in the same 20"-barreled Ruger No.1 factory rifle.
See below.

Rip ...

By golly, darn close to 450/400 NE 3" foot-pounds from a midget rifle!

Rip ...

Alas, the midget rifle was not expected to equal the 470 NE ballistics, far from it with H4198.
I need a faster powder than that to get to 1600 fps with the +500-grainer:



There were unburnt grains of powder lying in the barrel until I got up to 33.0-grain and 33.5-grain loads.
Apparent 100% burn when the heat and pressure got high enough.
I do not do QuickLOAD anymore.
I fly by the seat of my pants:



Maybe I can try the WLR primer (instead of WLP) and work up again, seeing if I can get more of the H4198 into the load.
Will save the prettiest "Red Death" bullets for final work.
Getting rid of "Black Death" and "Purple Death" bullets along the way ...

Rip ...

Why aren’t you using H-110/W296?

quote:

Originally posted by jwp475:
Why aren’t you using H-110/W296?

jwp,

Thanks for the reply. I am just getting started, gimme some time to get to it.
The H110, that is.
I shall forego W296, as I always did best with H110 in the .454 Casull.

I did have a pointer from a bud that LIL'GUN was great with 375-grain Cast Performance in his Ruger No.1 .475 Linebaugh.
He loaded to just 0.200" extra-COL, </= 1.965", i.e., like a .475 Linebaugh Maximum, using LIL'GUN 36.0 grains,
getting 2035 fps in his 20" barrel, at what temperature I do not know.

So I loaded a little longer, 2.075" COL,
with a little heavier bullet, 400-grainer,
and added 0.5 grains more powder.
Worked great: Over 2000 fps if the temperature gets above 54 degrees F.

LIL'GUN (#64.) is just one step faster than H110 (#65.) on my burn rate chart.
The Hornady manual showed only a 325-gr XTP with the .475 Linebaugh at standard COL, 1.765":
31.6 grains of LIL'GUN gives 1550 fps
31.8 grains of H110 gives 1500 fps.
Might indeed be that H110 will be even better with the 400-grain bullet and 2.075" COL and a little more powder weight.
I have room for it with the LongCOL Linebaugh.

As for the over-500-grain bullet at 2.285" COL: There have been no pointers from sumbuddy who know on this one.
So I have started with the slowest powder I imagined trying, my ol' favorite H4198.
Too slow.
#74. H4198
Working from this to faster powders I have on hand:
#72. Reloder-7
#68. AA 5744
#??. IMR SR-4759 (not in table anymore, but I have 8 pounds of it)
#67. IMR-4227
#66. W296
#65. H110
#64. LIL'GUN

Next,
I am thinking I will try a full case load of H110 with 400-grainer.
and
a full-case load of AA-5744 with the +500-grainer.
None of the half-fills of AA-5744 with this puppy.

Rip ...

Oh, yeah.
Some funny business occurred with the double-coated PC bullets, speckled red and black.
One bullet had a glob of the PC on its nose so that it would not chamber.
So I scraped the nose with a pocket knife until it would chamber.
It fired with no drama.
I am sticking to Harbor Freight Red, one coat, henceforth.
The Red Death.

And, BTW, HANDLOADER # 312, Feb. 2018 has a piece on "Powder Coating Cast Bullets: The Benefits and Downsides of Coating Your Own", by John Haviland.
He thinks 350 degrees F for 15 minutes is enough.
I will reduce from 400 F to 350 F for next batch.

PC does seem to reduce leading of barrel,
and if you want to hang your grease grooves out in front of the case mouth,
it is a must, IMHO.

Rip ...

RIP, I've not tried this new powder from Accurate Arms, 11FS, but it looks like the nuts for heavy bullets in the 475. About the same burn rate as Li'l Gun, but works especially well with the heavies.

whelenite,

Thanks for that. Where did you find that data? New one on me, 11FS.
Do you know of any +500-grain bullet loads?
425-grain bullet is a little light in the loafers for my purposes.
Here is the latest Western Powders and Hodgdon data I have, also lite loafers:

Western Powders:









Hodgdon:

Ramshot Enforcer and AA-5744 loads in the .475 Maximum (2.025" COL with 405-grain bullet) look interesting enough to try
with the 516-grain bullet in the .475 Linebaugh LongCOL (2.285" COL).

Rip ...

RIP, if you go to accuratepowder.com, then click on the Load Data menu at top left, you get a page with tabs for their two new pistol powders, 11FS and TCM (between #9 and 4100/Enforcer in burn rate).

Thanks, will check that out.

Rip ...